ICCAS OpenIR
Synthesis of linear low density polyethylene (LLDPE) by in situ copolymerization with novel cobalt and zirconium catalysts
Wang, H; Ma, Z; Ke, YC; Hu, YL
2003-09-01
Source PublicationPOLYMER INTERNATIONAL
ISSN0959-8103
Volume52Issue:9Pages:1546-1552
AbstractNew cobalt catalysts {[2,6-(CH3C=NAr)(2)C5H3N]CoCl2} (Ar=2-methyl-4-methoxyphenyl, 1) and (Ar=2,4-dimethylphenyl,2) were synthesized and found to exhibit good selectivity for alpha-olefins with methylaluminoxane (MAO) as co-catalyst. With only ethylene as the feed monomer cobalt catalysts 1 or 2 can be coupled with zirconium catalyst Dichloro [rac-ethylenebis(indenyl)]Zirconium (IV) rac-EtInd(2)ZrCl(2) (3) to produce linear low density polyethylene by in situ polymerization. Spectra of resulting materials exhibit ethyl, butyl and long-chain branches in the backbone of polyethylene. The ratio of Co/Zr and Deltat, which is defined as the interval between introductions of two catalysts into the reactor, influenced catalytic activity and the resulting materials greatly. Compatibility and complementary behaviour of different catalysts proved to be two most important factors for in situ copolymerization. (C) 2003 Society of Chemical Industry.
KeywordCatalysts Cobalt Catalyst In Situ Copolymerization Linear Lowdensity Polyethylene (Lldpe) Transition Metal Chemistry
DOI10.1002/pi.1282
Indexed BySCI
Language英语
WOS IDWOS:000185206400022
PublisherJOHN WILEY & SONS LTD
Citation statistics
Cited Times:28[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/80796
Collection中国科学院化学研究所
Corresponding AuthorHu, YL
AffiliationChinese Acad Sci, Inst Chem, Ctr Mol Sci, State Key Lab Engn Plast, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Wang, H,Ma, Z,Ke, YC,et al. Synthesis of linear low density polyethylene (LLDPE) by in situ copolymerization with novel cobalt and zirconium catalysts[J]. POLYMER INTERNATIONAL,2003,52(9):1546-1552.
APA Wang, H,Ma, Z,Ke, YC,&Hu, YL.(2003).Synthesis of linear low density polyethylene (LLDPE) by in situ copolymerization with novel cobalt and zirconium catalysts.POLYMER INTERNATIONAL,52(9),1546-1552.
MLA Wang, H,et al."Synthesis of linear low density polyethylene (LLDPE) by in situ copolymerization with novel cobalt and zirconium catalysts".POLYMER INTERNATIONAL 52.9(2003):1546-1552.
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